Floor furnace



A. GAMBLE.

FLOOR FURNACE.

APPLICATION FILED AUG.H, 1921.

Patented May 9, W226 F76. ii

/ N MFA/701? UNITED STATES PATENT OFFICE AUGUST GAMBLE, or PASADENA, CALIFORNIA, ASSIGNOB. To mnmoim GAS urn-- ANGIE commmr, or LOS ANGELES, cALn oRman CORPORATION or camromwm.

n FLOOR roams on Specification of ietters Patent.

Patented May 9, 19.22.

Application filed August'll, 1921. Serial No. 491,616.

To all uihom it may concern Be it known that I, AUcUs'r- GAMBLE, a citizen of the United States, residing in the city of Pasadena, county of Los Angeles,

and arrangement thereof whereby greater eiliciency is secured, also greater safety, and more economy in connection with the work of installing such floor furnaces in place.

In order to get greater efliciency, I have provided an annular heating chamber with means for causing the products of combustion and the hot gases to move in a spiral path from the entrance to said annular heating chamber to the discharge therefrom.

The bottom of the annular heating chamher is also arranged at a suitable incline to the discharge opening, whereby to insure proper drainage from said heating chamber, with suitable drain opening, in addition to the connection thereof with proper vent pipe. In addition to a continuous pilot light, I also provide an improved means for lighting the burnerfrom the register which is set over the floor opening, said means comprising an open tubular member extending from the register to a lighting burner element near the regular'burnen, Other features of improvement will be apparent from the following description of my invention, reference being sheet of drawing illustrating the same, and in which,-- f

Figure 1 is a vertical sectional view through a floor furnace embodying my invention;

Figure 2 is a reduced in size;

Figure 3 is a plan view looking down on top of the heat radiating member in which is the annular heating chamber;

Figure 4 is a plan View of the burner,

plan view of a floor register,

showmg the permanent pilot light burner,

the lighting burner and the gas supply connection; I

Figures 5' and 6 are detail views of the pilot and the lighting burners.

Referring now in detailto the drawing the outer casing 1, of my floor furnace is preferably square, and is supported by means of supporting brackets 2, which set had to the accompanying upon the top of the floor or joists, 3, so

that said outer casing is spaced from said joists, leaving an air space, 4, between the furnace casing and said joists. The floor register, 5, is provided on its under side with a recess around thes'ame, designated 5', which fits over the supporting brackets, 2, as shown, so that said on the floor.

Supported on the bottom, 6, of said outer casing, on a suitable casting-7, havingthe supporting arms, 8, 8, and the portion, 9, is a heat circulating element, comprising top and base castings, 10, and 11, with'outer and inner sheet metal walls, 12 and 13, asshown. The top casting 10, is shown in plan view, Fig. 3, and comprises an outer annular portion, 10 with a central portion 10*, with connecting arms, 10, spirally disposed, as i1: lustrated. The outer annular portion 10 is of inverted U-shape in cross section, provided with shoulders 10' to receive the outer and inner wall members 12 and 13. The bottom casting 11 is of annular form and tapering to one side, as indicated in Fig. 1, said casting being U-shape in cross section,

register rests flatwise with shoulders, 11*,to receive the outer and inner wall members, 12 and 13, said casting terminating at its larger-side in an outlet extension, 11*,for connection with a vent pipe, said extension being' extended through the outer casing 1', as shown, and being provided on its lower side with adrain opening, 11. The top and bottom castings are connected, by means of through bolts, in

holes 14, the lower'end of one of which is seen in Fig. 1, in dotted lines, as it is on the opposite side, and the tops or heads of which are seen in Fig. 3. Mounted centrally of said top. and bottom castings, is

an inner tubular member, 15, seated at its upper end into the central portion 10 of the top casting 10, and at its lower end, seated in the bottom 6, of the outer casing, as seen in Fig. 1. The top of 'the central portion 10 of the top casting is provided with a" little window, 10 through which the burner,

16, at the lower end of the tubular mem ber 15, can be seen. Said burner 16 is held side outlet openings, 18. Said manifold 19, is supported to the bottom of the furnace casing by means of suitable straps, 21. A

lighting burner, 22, on a pipe 23, connected to the manifold, is also provided, as shown, having top and side outlet openings, 22 and 22". The side opening 22 shoots afiame through the opening, 15 in the tubular member 15, to the burner. The gas supply to the burner is through the connecting pipe, 2'4, and the mixer, 25, from the manifold, 19, as shown. Three valves, 26, 27 and 28, are provided in the manifold, with rods 26, 27 28, extending up to the register, are provided for turning on the gas supply, as desired. The upper ends of the rods are turned by means of a suitable key in the usual manner. A lighting tube, 29, extends from the register, down to a position immediately above the lighting'burner 22, said tube 29, being formed of rolled sheet metal, with one side open, as indicated, whereby to facilitate the ignition of the gas in the tube so as to carry the flame quickly from the upper end down through the tube to the lighting burner 22. The lighting tube and the upper ends of the valve rods are seen in Fig. 2. One edge of thematerial of which the lighting tube is made is turned inwardly to a radial position, as indicated in the end view thereof in Fig. 3. Said tube is supported in the top casting 10.

Surrounding the heat radiating element, is .an intermediate drum or wall 30, which extends from the floor register, or a short distance below the same, to the bottom casting 11, of the heat radiating element, as indicated, said drum being supported by lugs, 31, 31, formed on the side of the top casting, 10, as seen .in Fig. 3. This forms an air passageway between said member 30 and the outside wall 1, for cold air, which passes down through the outer square openings of i the floor register, as indicated by the arrows.

This air then passes upwardly on the inside of said drum 30, and on the inside of the annular heating element and outside of the inner tubular member 15. The products of combustion and the hot gases pass from the burner 16 upwardly through the inner tubular member 15, thence out through the arms 10 in the top casting, 10, by which they aregiven a circuitous or spiral direction downwardly between the walls'12 and 13, as indicated by the spirally disposed arrows, passing out through the outlet extension 11 of the bottom casting. These burnt gases heat the ,walls 15, 12 and 13, which in turn heat the air passing upwardly around them and out through the floor register. All the fumes and waste products are carried out through the vent outlet at 11", and only the heated air is allowed to pass up into the room. If the continuous pilot light burner 18 is kept burning, it is only necessary to turn on the valve 28 which controls the gas. supply, and the burner will be lighted. If the pilot light is out, it is necessary to turn on the lighting burner 22, controlled by the Valve 26, light a match and hold it at the upper end of the lighting tube 29, and immediately the flame will run down the tube to the lighting burner, 22, one tongue of which from the side will shoot through the opening 159 in' the member 15.

lar heat radiating chamber around said central tubular element, and spaced therefrom,

-means connecting the top of the central tubular element with the annular radiating chamber, said means being adapted to direct the heat and products of combustion spirally through said annular chamber,' means for discharging said burnt products of combustion out of said furnace, and means for the passing of air to be heated through said furnace.

2. In a gas furnace, a gas burner, a tubular member above said burner, a member providing an annular chamber around said tubular member and spaced therefrom, a top casting connecting said tubular member with said annular chamber, with means for directing the products of combustion from the tubular member through the annularchamber in a spiral path, a bottom casting having means for directing the products of combustion from the bottom of said annular chamber outwardly therefrom, outer and inner wall members providing outer and inner air circulating spaces, and a floor register above said furnace.

3. In a gas furnace, a gas burner, a tubular member set above said burner, means proner wall members forming downward and -upward air passageways through said furner chamber with the upper end of said an-.

nular chamber, said means being connected tangentially with the upper end of said outer annular chamber, whereby to give a spiral direction to matter discharged therefrom into said annular chamber, and means at the lower end of said annular chamber to carry of]? products of combustion, means being provided for the passage of air upwardly between said inner chamber and said annular chamber.

5. In a floor furnace, in combination, an outer casing, an inner drum spaced therefrom, a heat radiating member having an annular chamber an inner tubular member, a top casting connecting the annular chamber with the inner tubular member, said top casting having a plurality of spirally disposed connecting arms for conveying the products of combustion from the inner tubu lar member to said annular chamber, a bottom casting for the annular chamber and having an outlet extension for the products of combustion and having a drain opening in its lower side, a burner at the lower end of said inner tubular member, means for supplying gas to said burner, a lighting burner near sa1d first mentioned burner with gas supplying connections thereto, and a lighting tube above said lighting burner, said tube being formed of rolled sheet metal with an open side and with an inturned edge extending lengthwise thereof, substantially as shown and described.

6. In a gas furnace, in combination, an outer casing, an annular heat radiating structure having a central chamber for products of combustion and an outer annular chamber connected at its upper end with said central chamber, the connecting means being arranged to the products of combustion in a spiral path downwardly through said outer annular chamber, outlet means from the lower end of said annular chamber, a gas burner at the lower end of said central chamber, a pilot light burner centrally disposed of in said burner, a lighting burner near the wall of said central chamber and outside thereof, said wall having an opening therethrough near said lighting burner, gas supply manifold with connections to said three burners, separate valves for controlling the gas supply thereto, a lighting tube,

having an open side, above said lighting burner and extending upwardly to the floor register, a floor register, and means for manipulating said valves from said floor register for controlling the gas supply, substantially as described.

Signed'at Los Angeles, Los Angeles County, California, this 3rd da of August, 1921.

AUG ST GAMBLE. Witnesses:

W. R. LITZENBERG, D. O. FAWCETT. 

